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Chainless transmission mechanism for bicycles

a transmission mechanism and bicycle technology, applied in the field of bicycles, can solve the problems of high cost and complicated manufacturing process of chainless bicycles with such a structur

Inactive Publication Date: 2002-09-19
GUANGZHOU MOTORS GROUP COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chainless bicycle with such a structure is of a complicated manufacturing process and a high cost.

Method used

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  • Chainless transmission mechanism for bicycles
  • Chainless transmission mechanism for bicycles
  • Chainless transmission mechanism for bicycles

Examples

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Embodiment Construction

[0018] The chainless transmission mechanism of the bicycle according to the present invention comprises a first shaft; a first bevel gear connected to the first shaft; a second shaft vertical to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, wherein the second bevel gear is matched with the first bevel gear to drive the second shaft; a third shaft vertical to the second shaft, connected to a clutch which is of ratchet and is connected to a fourth bevel gear matched with the third bevel gear; and a connection member for fixing the fourth bevel gear to the clutch.

[0019] In the transmission mechanism of the present invention, the connection member may comprise a hole at its end surface to match a first project extended forwards from the back of the fourth bevel gear so that the clutch may be driven by the fourth bevel gear. The hole mentioned herein may be of a square, a hexagon and other shapes, and the first project is of...

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PUM

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Abstract

The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.

Description

FIELD OF THE INVENTION[0001] The present invention relates to a bicycle, in particular, to a chainless transmission mechanism for a bicycle.BACKGROUND OF THE INVENTION[0002] A chainless bicycle comprises a drive mechanism mainly composed of bevel gears and transmission shafts to replace a chain in a conventional bicycle. The chainless bicycle has advantages of a stable transmission and a long life of use. However, the chainless bicycle in the prior art comprises a one-direction ratchet clutch. A spline hole of the bevel gear is matched with a spline shaft to complete the transmission. The chainless bicycle with such a structure is of a complicated manufacturing process and a high cost.[0003] Therefore, it is needed to provide a chainless transmission mechanism for a bicycle to solve the problems in the prior art.SUMMARY OF THE INVENTION[0004] An object of the invention is to provide a chainless transmission mechanism for a bicycle to overcome the drawbacks in the art.[0005] Accordin...

Claims

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Application Information

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IPC IPC(8): B62M1/36B62M17/00
CPCB62M1/36B62M17/00Y10T74/19688Y10T74/19665
Inventor HUANG, YONGQIANGZHANG, JINHONGOU, YAOCAIRUAN, WEIHUAWU, SHAOFANGXIAO, RONGHUA
Owner GUANGZHOU MOTORS GROUP COMPANY